Oil-distributing device



Oct. 30 1923.

O. HAJEK HI l OIL DISTRIBUTING DEVICE Filed May 25. 1921 Patented Oct.30, 1923.

UNITE sr OTTO HAJEK, OF VIENNA, AUSTRIA, ASSIGNOR TO THE FIRM OF ALEX.FRIEDMANN, OF VIENNA, AUSTRIA.

OIL-DISTRIBUTING DEVICE.

Application filed May 25,

To all whom it may concern:

Be it known that I, OTTO HAJEK, engineer, a citizen of the Republic ofAustria, residing at Vienna, in the county of Lower Austria and State ofAustria, have invented certain new and useful Improve ments inOil-Distributing Devices, of which the following is a specification.

This invention relates to oil distribution devices provided with aplurality of oil pumps, having plungers that are self regulating byvirtue of a reciprocating and an oscillating motion about their axes.This invention consists mainly in providing novel and improved means forimparting reciprocating and oscillating motion to the plungers wherebythe movement of a plurality of plungers is brought about in a moresimple and effective manner than in arrangements hitherto known, whichis due to the fact that a side shaft which is in parallel to theplungers is subjected to a reciprocating and s1- multaneously to arocking movement about its axis. This side shaft transmits its movementto the plungers by means of a disk or cam and by means of eccentrictrunnions integral with or fixed on the plunger heads.

In the accompanying drawings Figs. 1 and 2 show cross sections throughthe device at right angles to each other. Fig. 3 shows the disktransmitting the movement of the side shaft to the plungers.

In the drawings the reference numeral 1 indicates the side shaft, whichis arranged in parallel to the plungers 2 of the pump, the said shaftbeing subjected to a reciproeating and at the same time to anoscillating movement around its axis by th driving shaft 3 through themedium of the eccentric pin 4. The side shaft 1 carries the disc 5,fixed in a position perpendicular to its axis, and having recesses inwhich the journals or trunnions 9 may enter; the said trunnions arearranged eccentrically to the plungers and are provided with collars 8.The disc 5 can be slidably arranged on the sid shaft 1 and a dead strokedetermined by the position of th nuts 13 may be provided for; the strokeof all the plungers of the pump will be reduced by the amount of thisdead stroke and the head or output of the pumps will diminishaccordingly.

By means of the duct or channel 11 provided in the plungers 2 the oil atthe suction stroke will be conveyed from the oil cham- 1921. Serial No.472,611.

her 6 into the pump cylinder, while at the pressure stroke it will beconveyed from the cylinder into the pressure duct 12. After havingremoved the eccentric pin t the side shaft 1. and the plungers of thepumps may be removed simultaneously.

By means of a driving and regulating shaft, subjected to a reciprocatingand simultaneously to an oscillating movement about its axis and beingarranged with its axis in parallel to the plungers of the pumps it ispossible to obtain a reciprocating and self regulating movement of theplungers in a manner which is more simple and effective than any meanshitherto devised to bring about the same result, without need to resortto swaying disks or to intermediate shafts.

I claim 1. In an oil distributing device in combi nation, a plurality ofoil pumps, plungers for said pumps, a shaft parallel to said plungers,means for reciprocating and oscillating said shaft about its center andmeans including a common actuating member operable by said shaft fortransmitting reciprocating and oscillating movements from said shaft tosaid plungers.

2. In an oil distributing device in combination, a plurality of oilpumps, plungers for said pumps, a shaft parallel to said plungers, meansfor reciprocating and oscillating said shaft about its center and meansfor transmitting said reciprocating and oscillating movement to saidplungers, said last mentioned means comprising trunnions mountedeccentrically on said plungers and a disk on said shaft engaging saidtrunnions.

3. In an oil distributing device in combination, a plurality of oilpumps, plungers for said oil pumps, a shaft parallel to said plungers,means for reciprocating and oscillating said shaft and means fortransmitting said reciprocating and oscillating movement to saidplungers, said last mentioned means comprising eccentric trunnions onsaid plungers and a disk slidably mounted on but reciprocated by androtatable with said shaft and engaging said trunnions.

4. In an oil pump, in combination, a group of pump plungers havingeccentric trunnions thereon, a shaft having its axis arrangedlongitudinally with respect to the axes of said plungers, means forreciprocating and oscillating said shaft, and means for transmittingreciprocatory and oscillatory movements from said shaft to saidplungers, comprising an actuatlng member which is reciprocated andoscillated by said shaft andv barrel, a plunger in said barrel, a shaftpar-' allel to said plunger, means for imparting a. 10 reciprocating andoscillating motion to said shaft, an eccentric trunnion on said plunger,a disk on said shaft engaging said trunnion, operative by said shaft toreciprocate and oscillate said plunger.

In testimony whereof I aflix my signature 15 in the presence of twoWitnesses.

OTTO HAJEK. Witnesses: RUDOLFV SQHWARTZ, OTTO HARVITZ.

